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(No Model.)

F. W. A. SCHNEIDER.

ELECTRIC MECHANISM FOR OPERATING TELEPHONE GALL BELLS.

No. 414,085. Patented Oct. 29, 1889.

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UNITED STATES PATENT OFFICE.

FREDERICK \V. A. SCHNEIDER, OF TORONTO, ONTARIO, CANADA.

ELECTRIC MECHANISM FOR OPER ATING TELEPHONE CALL-BELLS.

SPECIFICATION forming part of Letters Patent No. 414,085, dated October29, 1889.

Application filed March 11, 1889. Serial No. 302,763. (No model.)

To all whom, it may concern.-

Be it known that I, FREDERICK WILLIAM AUGUST SCHNEIDER, machinist, ofthe city of Toronto, in the county of York, in the Province of Ontario,Canada, have invented a certain new and useful Improvement in ElectricMechanism for Operating Telephone Call- Bells, of which the following isa specification.

The object of the invention is to design simple mechanism for operatingan auxiliary telephone call-bell and annunciator; and it consists,essentially, of a telephone call-bell and annunciator so connected tothe telephonic circuit that upon being signaled its action breaks thecircuit leading to the magnets of the call-bell and switches it onto aline leading to the magnets of an auxiliary callbell situated at a pointremote from the telephone.

Figure l is an outside view of a telephone, showing the door closed toexpose the annunciator. Fig. 2 a view of the telephone with its dooropen to expose the signaling mechanism.

The wires A and I3 represent the line of the telephonic circuit, thewire A connecting di rectly with the magnets C of the telephonecall-bell, while the wire B connects with the said magnets through thefollowing mechanism-that is to say, it first connects with the plate D,which is properly insulated. The spring E, which is connected to thewire F, leading to the magnets C, presses against the pivoted lever Gwhen the said lever is set in the position indicated in Fig. 2, and thusso long as this lever G is in the position indicated the connection ofthe line A B through the magnets C is complete. To hold this lever G inthe position shown, a notch is made in the armature II. IV hen thesignal is given from the central stat-ion of the telephonic circuit, themagnets O are magnetized and the call-bell I is actuated in the ordinarymanner. The magnetizing of the magnets O draws the armature II away fromthe end of the lever G, which lever, being weighted at its other end,moves back on its pivot, so as to leave the spring E clear when the saidlever moves clear of the spring E, and thus breaks the circuit to themagnets Q. As the lever G is electrically connected with the plate D, acircuit is formed when the said lever comes in contact with the pin J,which is properly insulated and electrically connected with the wire K,which leads to an auxiliary call-bell situated at a point remote fromthe telephone. The wire L, leading from the magnet O, connects with theauxiliary callbell, and thus the circuit which previously operated thecall-bell I is connected so as to operate the call-bell when the signalis next g1 ven.

In order to prevent theinstantan eous breaking of the circuit throughthe spring E, I provide a small cylinder M, in which a piston connectedto the lever G is fitted, so as to form an air or oil cushion andprevent the lever falling away 'from the spring E too quickly.

I should mention that when the door N is closed the lower end of thelever G projects over the lever O.

From this description it will be seen that the first signal from thetelephonic circuit is announced through the call-bell I, and by the timethat this first signal is given the circuit for operating the call-bellI is broken and a fresh circuit formed through the auxiliary call-bell,which call-bell would then announce the next signal given from the otherend of the telephonic circuit.

'hen the lever G falls, as before described, it rests upon the topof thelever 0, when the said lever is held down by the weight of the receiverP. Then the receiver P is taken off the lever O, the said lever springsup in the usual manner, and, acting against the lever G, tilts it uponits pivot so as to bring its end into the notch made in the armature1-1, and thus hold it in the position indicated in Fig. 2, the lever Gresuming contact with the spring E; consequently the removal of thereceiver P from off its hook re-forms the circuit, so that the nextsignal will act upon the call-bell I. As a signal cannot be given twicein succession on the call-bell I without the removal of the receiver P,so as to permit the lever G to reset the mechanism, as described, it isnecessary to provide means for indicating the condition of the mechanismfor operating the callbell. lVith that view I make a hole Q through thedoor N, and behind this hole I pivot an indicating-plate R.

This indicating-plate has two colors painted on it, one colorsay blue-toindicate that the mechanism is set to operate the call-bell I, while theother color-say white-is intended to indicate that the mechanism is setto operate the auxiliary call-bell.

As shown in Fig. 2, the plate R is set to indicate the blue signal, andis held in position by the pin a, which is fixed to the lever G, andprojects behind the pin 1), fixed to the indicating-plate R. cl is thepivot-point of the plate R, from which pivot a weighted arm S, fixed tothe annunciator-plate R, projects. The arm S is shaped so that it willproject over the top of lever 0 when the door N is closed. When thefirst signal is sounded and thelever G is caused to rock on its pivot,as before described, the pin a is carried away from'the pin hand theweightedarin S causes the indicatin gpla'teR to rock on itspi vot andbringthe white signal in frontof the hole Q, thus indicating that themechanism is set for operating the auxiliary bell. instead of the bellI. When thereceiver P is removed andthe lever O is lifted, the saidlever comes in contact with the arm S, forcing it upwardly, so as tobring the indicating-plateB back into itsinitial position, the pin abeing simultaneously brought in front of the'piu b, and thus the Wholemechanism described is reset by the action of the said leverO.

lVhat I claim as my invention is 1 A: telephone callbell, a main circuitpassing through the coil of the magnet thereof, an auxiliary call-bellat a point remote from thetelephone-bell, and a branch circuit leadingfrom the telephone to the auxiliary call-bell, in combination with anautomatic switch for directing the currentfrom the main call-bell t0 theauxiliary call-bell, and a switch operated by the weight of the receiverfor returning the current to its original course substantially asdescribed.

2. A telephone call-bell, a main circuit passing through the coil. ofthe magnet thereof, and a branch circuit to an auxiliary callbell, incombination with a switch for automatically directing the current fromthe main call-bell to the auxiliary call-bell, and means, as the leversO G, for automatically changing the current back to its original course,substantially as described.

V 3. The wire A and .wire L, connected tb the magnet O, and the wire B,connected to the plate D, the spring E, arranged to form an electricalconnection with the lever G and wire F, and the magnet O, in combinationwith the armature l-I, lever G, pin J, and wire K, arrangedsubstantially as and for the purpose specified. I

4. The wire A and wire L, connected to the magnet O, and the wire B,connected to the plateD 'and the 'springE, arrangedto form an electricalconnection between the plate D and the magneto, in combination with anarmatureH, lever G, pin J, wire K, and air or oil cushion formed by thecylinder M, arranged substantially as and forthe purpose specified.

5.,{Ifh'e pivoted leverO and the pivoted lever G, arranged to engagewitha notch in the armature H andto project over the pivoted lever O, incombination with the circuitmaking and ,breakinglspring E, arrangedsubstantiajlly as and for the purpose specified.

6. The pivoted indicating-plate R, havinga weighted a'rm S fixed to itand designed to extend over the pivoted lever O, in combination with thepins a and 1), arranged substantially as and for the purpose specified.

Toronto, February 26, 1889.

FREDERICK W. A. SCHNEIDER;

In presence of CHARLES C. BALDWIN, W. G. MOMILLAN.

